I borrow a book from my friend and I can ________ it for a week.

Pollution is a serious problem. Scientists have _____ some good ways to save it.

Don’t bring food to the library, or your teacher will ______.

The windows are broken and need to be repaired.— I think so. They can hardly _____ the cold now.

I do my homework _____ ten o’clock every night. [ ]